The dietary protein requirement for jade perch, to get optimal growth was 39.71%, based on broken-line model analysis of the weight increase.
增重率的折线分析表明，宝石鲈幼鱼对饲料蛋白的最适需要量是39.71%。
2
Working state of a screw pump rod-line is analyzed using Finite element analysis method during broken working station, and three kinds of possible mechanical models are set up.